So I am doing my first real pre-preg tool.  The mould I had made for me has had issues........ loads of stress cracks appeared after only a couple of pulls.. Not looking for answers or reasons why that mould has had issues. I got so pissed off that I looked into a dozen different things and all I got was dizzy with each person giving me a different reason.  So I took one I had made and lacquered it to get a good finish and to remove some of the raised areas where the original stickers got left on the tank when it was moulded.  I put it back into the mould and have started to remake the mould using pre-preg carbon tooling. So far it seems to be working.. I have done the top section already and although I have not removed the section from the part the flange areas look perfect and if the rest of the mould comes out the same way I will be happy. Having had numerous quotes to remake the mould for me including a quote from the person who made it in the first place (he seems to feel it is other reasons and not his work that has caused the problem). I have bit the bullet with some Tooling from SHD. 

I will post updates as I go and hopefully in a few days will have a finished working full carbon pre-preg mould. 

Exactly..... If he felt bad and was doing a new mould at a good price especially as he had not fixed the initial problem, I would have expected he would do the next mould with materials that he knows would work better than the materials that had a problem and do it to see what could be used for future moulds. If not for free but at cost. I had always said I would never haggle a price if I am getting good moulds and I would stick with him. But when things go wrong you expect the same respect to be returned. 

This area had been repaired once and started to crack again. 



The blame by him was the mould cooling with the part still in the mould and I had not de-moulded hot.

By Marbocote.. The gelcoat was not suited to pre-preg use or the main body resin had not fully cured correctly and was not hard enough.

By Nord, Scott Bader etc.. The resins used were not suited to pre-preg use.